Bench-vise



UNITE STATES HENNING MATHIAS KNUDSEN, OF ANAOONDA, MONTANA.

BENCH-VISE.

SPECIFICATION forming part of Letters Patent No. 599,613, dated February 22, 1898.

Application filed August 31, 1897. Serial No. 650,170. (No model.)

To (.LZZ whom it may concern.-

Be it known that I, HENNING MATHIAS KNUDsEN, a citizen of the United States, residing at Anaconda, in the county of Deer Lodge and State of Montana, have invented a new and useful Bench-Vise, of which the following is a specification.

This invention relates to bench ,vises or clamps, its object being to provide a device of this character of simple construction which may be easily and quickly adjusted for use on material of different sizes or thicknesses and which will automatically operate to clamp the material when the latter is pushed forwardly between its jaws.

With this'and other objects in view the invention consists of the several details of construction and combination of parts, as will be hereinafter fully described, and particularly pointed out in the claims.

In the drawings, Figure 1 is a plan View of my improved bench-vise in position upon a bench, the latter being partly broken away. Fig. 2 is a vertical section on the line m of Fig. 1. Fig. 3 is a-similar view on the line y y of Fig. 1. Fig. 4 is a vertical transverse section through the fence or stationary jaw.

Similar numerals of reference designate corresponding parts in all the figures of the drawlngs.

1 indicates the bench, and 2 the fence or fixed jaw, which latter consists, preferably, of an angle-bar the horizontal member 3 of which is perforated for the passage of screws 4 or similar fastening devices, by means of which the angle-bar is firmly secured to the bench. The vertical member 5 of the anglebar is also perforated for the passage of screws 6 or similar fastening devices, by means of which a bar or strip 7 of greater height than the vertical member of the clamp may be se-.

curely but detachably connected to the latter.

8 indicates the movable jaw, which is supported upon the bench and comprises two arms, indicated by 8 and 9, respectively, the arm 8 being longer than the arm 9 and having a straight inner face, while the inner face of the short arm 9 is curved in ogee form, as clearly shown in Fig. 1. The inner faces of these arms extend at an angle to each other, and where the arms join the metal of the clamp is widened or extended laterally on the outer side of the arms, and this lateral exten sion is cored out to form an annular recess 10, the'flange 11 of which is partly cut away, as indicated at 12. A pin 13 projects upwardly in the center of the recess. The short arm 9 is the clamping-arm, and the long arm 8 is the actuating-arm,which-forces the clamping-arm into engagement with the material to be clamped.

14 indicates an adjusting-bar provided at one end with a flat circular head 15, which head has a central perforation 16 to fit over the pin 13. The head fits in the annular recess 10, and the bar 14 projects through the opening formed in the flange by cutting it away, as indicated at 12. The bar 14 is recessed on its upper face, as indicated at 17, and also slotted longitudinally, as indicated at 18. On its lower face the bar 14 is rabbeted at both edges, as indicated at 19, and provided with teeth 20 and flanges 21, which extend longitudinally of the bar between the teeth and the slot 18.

22 indicates a plate firmly secured to the bench by screws 23 or similar fastening. devices, and this plate is provided with spaced parallel ribs extending longitudinally thereof, which ribs are provided with teeth 25 on their upper faces.

26 indicates a boss between the ribs 24, intermediate the ends of the plate, and this boss is provided with a threaded opening for the reception of the threaded stem of a thumbscrew 27. This thumb-screw is provided with a flange 28 between its head and threaded stem.

29 indicates a spring formed of a piece of spring-wire and provided with a coil 30 intermediate its ends. One end of this spring is upwardly bent, as indicated at 31, and secured in the vertical opening in the bar 14, while its other end is loosely inserted in a horizontally-disposed opening in a boss 32 on the long arm 8 of the movable'jaw. The normal tendency of this spring is to force the arm inwardly toward the stationary jaw, and the short arm 9 will consequently be moved away from'the stationary jaw.

In operation the movable jaw will be adj usted toward the fixed jaw by means of the adjustable connection between the bar 14 and the fixed plate 22, and the material, such as a board, will be inserted between the inner face of the short arm 9 and the stationary jaw and pushed forwardly until it engages the long arm 8, and as the object is pushed forward the long arm will be forced away from the stationary jaw and the short arm moved in toward it until it binds against the object, and it is obvious that the greater the forward strain on the object the tighter it will be clamped between the fixed jaw and the arm 9. In order to disengage the object from the clamp, it will only be necessary to move it rearwardly, when the arm 9 will be forced out of contact with the obj ectby the spring 2 It is my intention to make the movable jaws of different sizes, or rather of different thicknesses, in order that they may be used for very thin material, and the object of making the strip 7 detachable from the an gleiron is that the height of the vertical face of the stationary jaw may be reduced when necessary to correspond with the height of the face of the movable jaw. In all cases the same adjusting-bar may be used, and it is obvious that the several parts can be disconnected very quickly when it may be necessary to do so.

Changes in the form, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus described the invention, what is claimed as new is- 1. In a bench-vise, the combination with a fence, of a movable jaw supported on the bench and having an annular recess the flange of which is partly cutaway, and a bar clamped to the bench and having a flat circular head to seat in said annular recess with the bar extending through the opening in the flange, whereby the jaw can turn on said head and be held against vertical movement, substantially as described.

2. In a bench-vise, the combination with a fence, of a movable jaw supported on the bench and having an annular recess, the flange of which is partly cut away, and a central pin, a bar clamped to the bench and having a flat centrally-perforated circular head to seat in said annular recess and fit over the pin, with the bar extending through the opening in the flange, whereby the jaw can turn on said head and be held against vertical movement, and a spring connected at one end to said bar and at its other end to the jaw to one side of its axis of rotation, substantially as described.

3. In abench-vise, the combination with the fixed jaw, having a straight bearing-face, of a movable jaw supported on the bench, said jaw comprising a long actuating-arm and a short clamping-arm, the inner faces of which are at an angle to each other, and a lateral extension on the outer face of the jaws at their junction, said extension having an annular recess, the flange of which is partly cut away, and a central pin, a bar clamped to the bench and having a circular perforated head to fit over said pin in the recess with the bar extending through the opening in the flange, and a spring secured at one end to the bar and detachably connected to the long arm of the jaw, to normally force the long arm toward the fixed jaw, substantially as described.

4:. In a bench-vise, the combination with a fixed jaw having a straight bearing-face, of a movable jaw supported 011 the bench, said jaw comprising a long actuating-arm and a short clamping-arm, theinner faces of which are at an angle to each other, a plate firmly secured to the bench and having spaced parallel ribs provided with teeth on their upper faces, a slotted bar pivotally connected at one end to the movable jaw at the junction of its arms and having spaced flanges on its lower face to fit between the ribs on the plate, and having also teeth to interlock with the teeth 011 the plate,a thumb-screwextending through the slot in the bar into said plate to lock the teeth together, and a spring secured at one end to the bar and detachably connected to the long arm of the jaw, substantially as and for the purpose specified.

5. In a bench-vise, the combination with a fence, of a movable jaw supported on the bench and having an annular recess the flange of which is partly cut away, a plate firmly secured to the bench and having teeth on its upper face, a longitudinally-slotted bar having teeth on its lower face to interlock with the teeth on the said plate, said bar having also a flat circular head on one end to seat in the annular recess in the jaw with the bar extending through the opening in the flange, and a set-screw extending through the slot into the said plate, to adj ustably clamp the bar and plate together and hold the jaw against vertical movement, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

IIENNING MATIIIAS KNUDSEN. lVitnesses:

JOHN BERGQUIST,

W. B. RODGERS. 

